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Run: 2026-05-31-01KSYXB68K3ZGPCE7M6AQ9VRZM
Run Details
Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
8.9s
Cost:
$0.012390
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
99.74%
Matches word count
(details)
0.00%
Dialogue to Total Word Ratio
(details)
49.8722%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 50% words of dialogue between two thieves named Molly and Bill who are planning to break into a children's party to steal all the presents. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Molly spread the blueprints across the table, knocking over a juice box. "So the bouncy castle is here," she said, jabbing a finger at the paper. "That's our entry point." Bill squinted. "We're infiltrating through a bouncy castle?" "It's genius. Nobody suspects a grown adult flopping around in there." "Molly, I'm forty-three. My knees can't handle that." "Then wear pads," she snapped. "Now, the presents are stacked near the cake table. We grab everything, stuff it in garbage bags, and walk out." Bill scratched his chin. "What about the clown?" "What clown?" "Every kid party has a clown. He'll see us." Molly waved her hand dismissively. "We bribe him with cake." "You can't bribe a clown with cake. They're professionals." "Everyone has a price, Bill." He leaned back, crossing his arms. "This is insane. We're stealing from children." "Rich children," she corrected. "Their parents bought a pony." Bill blinked. "There's a pony?" "Focus!" Molly slapped the table. "We're in, we're out, we're millionaires." "From action figures and friendship bracelets?" "It's the principle of the thing." Bill sighed, defeated. "Fine. But I'm not wearing the knee pads." Molly grinned wickedly. "You'll wear them. And you'll love them."
created_at
"2026-05-31T11:40:10.913Z"
5/31/2026, 11:40:10 AM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1055
moderation_latency
(null)
generation_time
8821
tokens_prompt
77
tokens_completion
341
native_tokens_prompt
93
native_tokens_completion
477
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.01239
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_011r9sMyLSsXMDXyBengRkgV"
is_byok
false
latency
1055
model_permaslug
"anthropic/claude-4.8-opus-20260528"
provider_name
"Anthropic"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer
(null)
request_id
"req-1780227610-sBdNWXK0ulGrcPwc3qvL"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780227610-7m5VuZJNATX6Euk020ua"
upstream_id
"msg_011r9sMyLSsXMDXyBengRkgV"
total_cost
0.01239
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
99.74%
Matches word count
n/a
neededClean
false
words
196
0.00%
Dialogue to Total Word Ratio
Ratio: 73.10%, Deviation: 23.10%
neededClean
false
wordsTotal
197
wordsDialogue
144
49.8722%